What's been your best investment to date, and how did you discover it?

CoraSchlesinger:

CELG@ split equivalent 0.78/shr in mid-90s. Read an article in WSJ about their then-technology, which they eventually sold off to become the CELG we know and love. The 1996 Annual Report was a cute little folded up newsprint pamphlet in a business envelope saying, "As of January 1, 1996, we have 467 shareholders of record." They grew organically on their own pipeline for a long time, but are now an acquisition monster. It's always been a very buoyant stock, but I've never seen it go on a tear such as of late.